Safety-envelop.



No. 810,804. PATENTED J N. 23,1906.

J. PBLLERIN.

SAFETY ENVELOP. APPLICATION FILED MAY 20,1905.

2 SHEETS-SHEET l.

INVENTOI? fisgvh kllerz'ip I ATTORNEYS J. PELLERIN. SAFETY ENVELOP.

APPLICATION FILED MAY 20,1905.

2 SHBETSSHEET 2.

, 6 Z WITNESSES. lNl/E/VTOR g; fisep/ZfiZZezz'zz I I 10% B I man/ms IUNITED STATES.

PATENT oFFIoE.

To all whom it may concern:

Be it known that 1, Josemrmmem, a

citizen of the United States, and a resident of Catalla', in the District of Alaska, have invented a new and Improved Safety-En'velop,

of which the following is a full, clear, and exact description. 1 n r The object of this invention is to .provide novel details of constructionifor an'envelop which will prevent opening of the envelop if sealed without tearing parts of thes'ame, and thus'expos'ing the felonious'attempt.

The invention consists in the novel constructionandrelative arrangement of parts,

as is hereinafter described, and defined in'- the ap ended'claims. Y i i l teferenoe is to be been) the accompany ing drawings, forming apart of this specificationfin which similar characters of reference I struction and marginal shape before folding the same. Fig. 2.:is'a plan view showing the end fia s folded and interlocked. Fig. 3 is'al' rear si' e view of the'e'nv'elop folded. except the sealing-fia'pthat when folded and sealed,

indicate corresponding parts. all the-ffig 'u'res. v

Figure 1 is a plan'view of the i'mproved'enfl velop flattened out, showmg its'novel con completes the closure of the envelop. Fig. 4

"shows the. rear-side of the envelop completely closed, one, flapof the same being. broken away to expose novel details; and Fig. '5 is an enlargedlon itudinal sectional view substantially on the ine 5 5 in Fig. 4.

As shown in Fig-1, which represents the envelop-blank fiattened and ready for folding, there are two oppositely-extended end flaps 6 7 and two opposite side flaps 8 9,

. formed on an oblong rectangular portion 10,

that represents the front side of the envelop.

The end flaps 6 7 are designed'to be folded over andupon the rear surface of the portion along the dotted lines a a/and b b, respectively, and; the side flaps 8 9, folded in a like manner along tlfe dottedlines a band a b, respectively. Each endfiap- 6 7 r has a straight edge 0, these edges alining with the dotted line a b, so that when the end flaps are folded over upon the normally inner surface of the front wall 10 these edges 0 will be positioned direotly'rearward of and flushwith the'dividing-line a 7) between the side flap 8 and the center portion or front wall 10, as appears in Fig. 2. The remaining side edges (Z e of the end flaps 6 7' converge somewhat toward their outer ends a e thus reducing.

Specification of Letters Patent. Application filed May 20, 1905; -3 Serial No- 261,838. I

- folde e" of the flap 7.

Patented. Jan. 23,1996.

extensiomflap 6 is formed on the-free end of the flap 6, having nearly parallel side edges. The straight edge 0 of the end flap 6 isshor'ter than'the opposite. edge d, and the trend ofthe extnsion-flap 6 is in the same direction as the edged, thus projecting thecorner g on the extension-flap. somewhat beyond the line of the side edge 0. There is a slit hformed between the endportion'of the flap 6 and the the widthof the free ends of these flaps. An i .flap extension 6*, this slit trending toward the end a of the side edge'a/ a, and represents about one-half of the w1dth of the extensionflap. 1 The side edge-extending between the slot h and corner 9 on the extension-flap6 is somewhat lon er than-'the other side edge that is define by the reference characters a, and g. isso (proportioned that the flap -7 maybe .uponand extend over the end portion of the flap 6, which folding will aline the side edges 0 c of the end flaps. In the end flap 6, at a suitable distance from the slit h, a, slotted c of the sideedge con the flap 7 is farther The length of the end flaps 6 7 from the corner 7) between the flap 7 and side flap .Sthan .is the outer end e of the'sloped v side e from the corner b that is between the end fiap 7- and side flap9, thus disposing the outer edge e on. the flap 7 at an incline to the edge e. A slot-opening 'ni is formed in the end flap 7.near'the edge e thereof, and, as shown in Fi s. 2 and 4, the flap extension 6 may. be freely inserted thro'ughthe slot m when the flap 7 is folded toward the flap 6.

The relative proportionof parts is such that i the extension-flap 6 if'folded away from the slot m over theend portion of the flap 7, -defined by the'reference character a, and upon the body of the flap 6, may be passed through.

the slot-opening 'L, and thence beneath the flap 6, as is shown by dotted lines in Fig. 2.

As shown at n in Fig. 1,- the normally rear side of the flapexte'nsion 6 at and near-its free end is coated with sealing-gum, which maybe rendered adhesive by moisture applied thereto. The folded engagement of side edge of said slot that is nearest to the end Hence if the end portion of the extension-flap 6 is moistened so as to runder the gummed surface n adhesive, then passed through the slot 2' and the flap extension is flattened by pressure the end portions of the flaps 6 7'Will be secured together in a manner which wilLprevent release without the flap extension 6 with the slot 'II-v is at the I edge rendered convex, and near said'edge at each side of the slit "suitab e ma the longitudinal center of the flap a transverse slit is formed therein. There is a part of the normally inner surface of the flap 8 coated with sealing-gum, this gum'med portion p extending a ong the edge of the flap 0, leaving the mar in of the flap uncoated, as is clearly shown in]: ig. 1. After the end flaps have gether, as hereinbefore described, the side flap 8 is sealed over said end flaps by Wetting the gummed surface 7;) and-then folding the flap closely thereupon.

It is to be understood that the improved envelo s in qlililantity are manufactured with c 'nery, and the gumming and closure of the end flaps and the side flap 8 is conducted at the factory. The edge of the flap 9 is preferably convex, curved to correspend with the edge of the flap 8, and upon t e normally inner surface of the flap 9 adhesive gum is placed, as usual, for sealing the flap, this gummed surface 1) being shown in Figs. 1,-2, and 3. Upon the edge ofthe flap!) a tongue 9 is formed that projects therefrom of a suitable length and width, and at the free end of the tongue a lip 1- isformed that extends laterally or toward the end of the envelop Whereon the fla 7 is placed. 7 Theli 1' it is obvious that opened without tearing the hoo r from the is convexed on the a e of its free end an is folded so as to forma ook member 7" thereon, which extends toward the tongue on the side of the tongue and lip that is in the same planewith the gummedsurface of the flap 9'.

In empl'pying the envelop as; an inclos'ure for a written or printed letter'or the like after such matter has been placed in the open envelop the flap 9 is folded toward the end flaps 6 7. The tongue 9, which is thus caused to approach the slit 0, is passed through said slit and inserted between the side flap 8 and the interlocked portions of the end flaps 6 7. The tongue 9 trends slightly toward the slot m in the flap 7 through which'the extension-flap 6 ha's'beenpassed and folded upon' the flap. ,6, as before explained. I The hook 1" by the complete insertion .of the tongue .9 is -dis posed in the slot 'm and has'its free end positioned close to the slitph, thatTpartly sepa rates the extension-flap 6 from theend flap 6.

It will be understood that the gummed surface p'should be'moistened before the tongue 9 is introduced within the slot 0,,and upon completing the insertion of said tongue the.

application of pressure upon the flap 9 will seal the envelop. As the position'ofthe hook T will insure an engagement of said hook within the slit her-upon the folded portion of. the extension-flap 6 in case the gu'mmed flap 9 is loosened by steam or immersion in water, a

the ,envelo been secured to' slit, said extension-flapbeing cannot be tongue 9, which will expose a fraudulent opening of the envelop, as it will be impossible to restore the tongue and hook to normal condition. -If the inclosure is opened by the person it is sent to by cutting either end or side edge of the envelop open, the interlocked engagement of the end flaps and of the tongue-hook r with the flap 6 may be readily inspected, andv if the envelop has been opened previously this will be plainly shown by the condition of the interlockingportions of the envelop/Y Having thus described ,my invention, '1

- claim as new and desire tosecure by Letters Patent 1. An envelop comprising a front portion, end flaps foldable'toward each othcr and lapping at their free ends, each end flap having a transverse slot therein'near its free end, an extension-flap on the end of one of said end flaps and partlyseparated therefrom by a transverse slit the-ext'ension-flap being inserted through the slot in the other end flap,

then folded at the'slit toward and-u on the end flap ofwhich. it is a portion, the ee end of the -extension-flap having its free end gummed and moistened, then passed through the slot in the flap upon which cemented thereto 'by the gum, and side flaps foldable toward each other upon the emlil' flaps osure .o t e en.

and cemented velop; I I

2. An envelo' comprising a front portion, end. flaps foldab e toward each other and lapping at their free ends; each end flap having a transverse slot therein near its free end, an extension-flap on one of said end flaps and partly separated therefrom by a transverse passed through the slot in the other end flap, then folded at thereon for c the slit toward and'upon the. flap of which it isa portion, the free end of the extension-flap being passed through the slot in the flap upon which it is folded and thereto cemented, a side flaphaving a transverse slot near its edge, which edge is gummed and cemented it is folded, and 4 upon the'end flaps'when-said side flap is folded thereon, a mating side flap having a tongue extended from its edge that will enter the slot in the other side flap when folded toward said slot, and a hook formed on the end of the tongue at one side edge thereof, said hook being adapted to interlock with the slitted edge of the extension-flap when the tongueis inserted in the slot and the flap from which it extends is folded down on'the end fiapsf In testimony whereof I have'signed my name to this specification in the two subscribingwitnesses. I

I JOSEPH PELLERlNt Witnesses: 1

WILLOUGHBY CLARK. W.-'-F'. SWIFT. 1

presence of v 

